Results 131 to 140 of about 1,289 (291)

On the origins, chemical, and morphological evolution of comet comae and asteroid ejecta through optical integral field unit spectroscopy

open access: yes
The smallest bodies of the Solar System, comets and asteroids, can display an array of active behaviours and extended morphologies, such as the sublimation-induced production of transient atmospheres called comae and the impact-instigated injection of ...
Murphy, Brian Prevost
core   +1 more source

Controlling the Center of Mass Motion of Levitated Particles Using Structured Wavefronts

open access: yesLaser &Photonics Reviews, EarlyView.
Optically levitated particles have great potential for quantum‐enhanced sensing. Precise control of the trapping beam is crucial to improve the stability and confinement of these systems. Here, we study how structured wavefronts can be used to control the center‐of‐mass motion of levitated particles, enhancing trap stiffness and enabling stable ...
Shah Jee Rahman   +7 more
wiley   +1 more source

Postperihelion Coma Composition of the Interstellar Comet 3I/ATLAS from Optical Spectroscopy

open access: yesThe Astrophysical Journal Letters
We present multiepoch optical spectroscopy of the interstellar comet 3I/ATLAS obtained between 2025 December and 2026 January (heliocentric distances of 1.8–3.3 au), yielding postperihelion production rates and mixing ratios for CN, C _3 , C _2 , CH, and
Ruining Zhao   +6 more
doaj   +1 more source

Calibration‐Free Single‐Frame Super‐Resolution Fluorescence Microscopy

open access: yesLaser &Photonics Reviews, EarlyView.
A deep learning framework reconstructs super‐resolved fluorescence images from a single dense camera frame, without any prior calibration or knowledge of the microscope. Trained solely on synthetic data, it generalizes across imaging setups and conditions.
Anežka Dostálová   +3 more
wiley   +1 more source

Tracking Genetic Parkinson's Disease with Molecular Imaging: A Systematic Review

open access: yesMovement Disorders Clinical Practice, EarlyView.
Abstract Background Parkinson's disease (PD) is a worldwide, complex neurodegenerative disorder influenced by both genetic and environmental factors. Around 15–20% of PD cases are linked to genetic mutations, providing insights into the disease's pathogenesis.
Chiara Meneghini   +5 more
wiley   +1 more source

Coma Volatile Composition and Thermal Physics in Comet C/2022 E3 (ZTF) Measured near Closest Approach to Earth with NASA-IRTF

open access: yesThe Planetary Science Journal
The 2023 perihelion passage of comet C/2022 E3 (ZTF) afforded an opportunity to measure the abundances and spatial distributions of coma volatiles in an Oort cloud comet at high spatial resolution near its close approach to Earth ( ${{\rm{\Delta }}}_ ...
Nathan X. Roth   +11 more
doaj   +1 more source

Hydroxamic Acids as HDAC Inhibitor Drug Leads for Malaria

open access: yesMedicinal Research Reviews, EarlyView.
ABSTRACT Malaria is a global health threat, with an estimated 282 million cases and 610,000 malaria‐associated deaths reported in 2024. Most mortality is due to infection by Plasmodium falciparum parasites, with the highest burden occurring in Sub‐Saharan Africa.
Wisam A. Dawood   +7 more
wiley   +1 more source

Rotationally Driven Ultraviolet Emission of Red Giant Stars. II. Metallicity, Activity, Binarity, and Subsubgiants

open access: yesThe Astronomical Journal
Red-giant-branch (RGB) stars are overwhelmingly observed to rotate very slowly compared to main-sequence stars, but a few percent of them show rapid rotation and high activity, often as a result of tidal synchonization or other angular momentum transfer ...
Don Dixon   +4 more
doaj   +1 more source

Improving enteral nutrition in patients requiring neurological intensive care unit care: A retrospective study on a novel bedside nasointestinal tube placement technique

open access: yesNutrition in Clinical Practice, EarlyView.
Abstract Background This study aimed to develop and assess a bedside nasojejunal tube placement technique designed for resource‐limited settings to address the specific challenges of enteral nutrition (EN) delivery in neurocritical care patients, particularly those at high risk of reflux and aspiration. The technique sought to overcome the drawbacks of
Niuchenglin   +5 more
wiley   +1 more source

Learning curve of nurse‐performed electromagnetic‐guided nasogastric tube placement in adult ICU patients: A multicenter prospective study

open access: yesNutrition in Clinical Practice, EarlyView.
Abstract Background Safe and timely nasogastric tube (NGT) placement is essential for effective enteral nutrition delivery in critically ill patients. Electromagnetic‐guided systems has been shown to improve placement accuracy and may reduce delays from confirmatory imaging, but evidence on how nurses acquire competence with this technology remains ...
Kazunao Mori   +15 more
wiley   +1 more source

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